Shock absorber for parachute jumpers



March 28, 1944. J. ALBERT ET AL I SHOCK ABSORBER FOR PARAGHUTE JUMPERSFiled May 16, 1942 i 'l lllllllllil g glll INV NTORS Patented Mar. 28,1944 UNITED STATES PATENT OFFICE SHOCK ABSORBER FOR PARACHUTE JUMPERSJoseph Albert, Brooklyn, and Arthur Ginsburg,

New York, N. Y.

1 Claim.

The purpose of our invention is to provide a shock absorber forparachute jumpers which is attached to the feet and when the jumper hitsthe ground, the shock is absorbed in our invention and eliminates thedanger of injuries to the body, particularly the legs.

Our invention is simple in design and may be readily attached ordetached in a minimum of time and physical efiort.

Referring to the drawing:

Figure 1 is a top plan view.

Figure 2 is a side view.

Figure 3 is face plate at front.

Figure 4 is face plate at rear Figure 5 is a rear View.

We attain these objects by the means illustrated in the drawingaccompanying this specification, in which Numeral l is the shockabsorber for parachute jumper, one for each leg; numeral 2 is the bottomspring plate, the forward end of which is coiled at 3 and wound aroundbar 4, held in rigid position by means of face plates 5 and locked bycotter-pins B; the rear of the bottom spring plate 2 is coiled at I andwound around the bar 8 and held in rigid position by means of faceplates 9 and cotter-pins Ill. The upper spring plate II is coiled atforward end l2, wound around the bar l3 and held in rigid position bymeans of face plates 5 and locked by cotter-pins I4. The upper springplate at rear end is coiled around bar and held in rigid position bymeans of face plates 9 and cotter-pins Hi. The upwardly I plate II.

extending movable bars I! and I1 are held in position on bar I5 by meansof face plates 9 (both sides) and cotter-pins l5.

At the top of bar I! a steel strap [8a is held in secured position andis snapped around the leg being readily attached and detached. The strapI8 is placed around the shoe and held in secured position at openings [9on each of the face plates 9. The front shoe strap 20 is insertedthrough slots 2| and 2! in the upper spring Grooves or corrugations areshown at 22; cushioned springs are shown at 23.

Slight changes may be made in our invention without departing from thebroad scope of the invention.

We claim:

A shock absorber for use on each leg and shoe of a parachute jumper;comprising a base spring rolled front and rear over steel bars; an upperplate rolled at each end over steel bars front and rear; a verticalshaft on each side attached to said upper plate; face plates front andrear connecting the adjacent bars and held in place by means Of cotterpins inserted through the holes at the ends of the bars; cushionedsprings insertecl between said upper plate and said base spring: acircular steel spring attached to said vertical shafts; said base platehaving corrugated grooves at the bottom; and straps on the front andrear of the shock absorber for attachment to the shoe.

JOSEPH ALBERT. ARTHUR GINSBURG.

